<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .banner{
            position: relative;
            width: 500px;
            height: 470px;
        }
        .btn-left{
            width: 40px;
            height: 40px;
            /* background: #000; */
            color: #fff;
            text-align: center;
            line-height: 40px;
            /* border-radius: 10px; */
            border-top-right-radius: 20px;
            border-bottom-right-radius: 20px;
            position: absolute;
            top:50%;
            left: 0;
            margin-top: -20px;
            /* 0-1科有小数点 
             opacity: 0.3;*/
             /* 设置背景颜色，同时透明度 */
            background: rgba(00, 00een, 00blue,0.3);
        }
        .btn-left:hover{
            background: rgba(00, 00een, 00blue,0.5);
        }
        .btn-right{
            width: 40px;
            height: 40px;
            /* background: #000; */
            color: #fff;
            text-align: center;
            line-height: 40px;
            /* border-radius: 10px; */
            border-top-left-radius: 20px;
            border-bottom-left-radius: 20px;
            position: absolute;
            top:50%;
            right: 0;
            margin-top: -20px;
            background: rgba(00, 00een, 00blue,0.3);
        }
        .btn-right:hover{
            background: rgba(00, 00een, 00blue,0.5);
        }
        .banner-list {
            position: absolute;
            left: 50px;
            bottom: 30px; 
            list-style: none;
            
        }

    </style>
</head>
<body>
    <div class="banner">
        <div class="btn-left">&lt;</div>
        <div class="btn-right">&gt;</div>
        <img src="../image//chaye.webp" alt="">
        <ul class="banner-list">
            <li></li>
            <li></li>
            <li></li>
            <li></li>
        </ul>
    </div>
</body>
</html>